safelight

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safelight

[′sāf‚līt]
(graphic arts)
A darkroom light of a particular color that will not affect the sensitive material being handled; for example, blue-sensitive materials require a red, orange, or yellow safelight.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The video recording equipment and safelights were connected to a power supply with battery back-up.
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